The CFC-free oil-in-water tester.
eracheck eco combines the inherent advantages of IR methods, like high speed and sub-ppm precision with the use of the CFC-free and low-cost extraction solvent cyclohexane. eracheck eco is the only analyzer on the market being fully compliant with the latest standard ASTM D8193. The cost-efficient and eco-friendly measurement technology provides the most economical alternative for oil-in-water testing on the market.
ASTM D8193
ASTM D8193 describes a direct IR transmission measurement of oils and greases in the extraction solvent. The method does not require any solvent evaporation like gravimetric or solventless IR methods and therefore allows the measurement of all fractions of the sample, including the light ends, with sub-ppm precision (repeatability SD: 0.2 mg/L oil-in-water). Compared to GC methods that do not detect fractions eluting outside the defined time window, ASTM D8193 enables a more complete fraction of extracted hydrocarbons much faster and easier.
Option: 10-position autosampler for high sample throughput
eracheck eco is a compact stand-alone analyzer equipped with an industry proven 8.4″ multilingual color touchscreen and a built-in industrial PC. State-of-the-art connectivity options like LAN, 5 x USB and RS232 allow you to attach the latest printers, keyboards and bar code scanners or to connect the instrument to any Laboratory Information Management System (LIMS). Furthermore, the fully automated measurement enables the use of eralytics’ directly attached 10-position autosampler for higher sample throughput and even more efficiency.
Option: 10-position autosampler for high sample throughput
eralytics’ 10-position autosampler is an optional accessory for the oil-in-water tester eracheck eco. The 10-position autosampler is directly attached to the instrument allowing it to conveniently connect up to 10 samples simultaneously. It is the perfect solution for higher sample throughput and even more efficiency. All instruments maintain their portability, even with the 10-position autosampler attached.
Technical Specifications
| Available Test Method | ASTM D8193 |
| Correlation to | Infrared spectroscopy: ASTM D7678, ASTM D3921, D7066; DIN 38409-H18; OSPAR IR method; IP426 Gas chromatography: ISO 9377-2, ISO 9377-2 (mod) OSPAR, ISO 16703; MADEP-EPH; EN 14039 Gravimetry: EPA 1664, EPA 9071; ASTM D4281; ISO 9377-1 |
| Extraction Method | External liquid-liquid or solid-liquid extraction |
| Extraction Solvent | Cyclohexane |
| Applications | TOG (Total Oil and Grease) and TPH (Total Petroleum Hydrocarbon) |
| Sample Clean-up (TPH) | Simplified removal of polar substances with eralytics’ disposable Florisil® cartridges |
| Sample Volume | Typically 900 mL water and 50 mL cyclohexane (min. 10 mL solvent required per measurement) |
| Measurement Time | appr. 2 min + 2 min background measurement |
| Repeatability (SD) | Enrichment factor 18 (900:50 mL H2O:Solvent) 0 – 49.9 mg/L: 0.2 mg/L 50 – 299.9 mg/L: 0.5 mg/L 300 – 1 000 mg/L: 1.2 mg/L |
| Method detection limit (MDL) | 0.5 mg/L oil-in-water (900:50 mL H2O:Solvent) 18 mg/kg oil-in-soil (20 g:40 mL Soil:Solvent) |
| Measurement Range | ASTM D8193: 0-1000 mg/L oil-in-water (900:50 mL H2O:Solvent) Up to 18 000 mg/L oil-in-water (50:50 mL H2O:Solvent) Up to 36 000 mg/kg oil-in-soil (20 g:40 mL Soil:Solvent) |